Hello Saxon team,
it seems to me that the Saxon implementation of xsl:result-document does not accept file paths starting with a windows drive, like
A preceding "file:/" is required, which is not the case after removing the drive specification (/a/b/c).
The fn:doc function, on the other hand, accepts a path starting with a drive.
Maybe this difference is intended - maybe not. At least it is a little confusing.